Annular array and method of manufacturing same

Details Annular array and method of manufacturing same Annular array and method of manufacturing same

1985-10-10

1989-12-26

Hall, Carl E.

Metal working

Piezoelectric device making

310322, 310335, 310369, H01L 4122, H01L 4104

Patent

active

048888613

ABSTRACT:
A method for manufacturing an annular acoustic transducer array from a plate of transducer material, which enables production of precision aligned arrays at low cost. The circular plate is sawed along at least two lines that are radial to the axis of the plate. At steps along each radial cut, the plate is rotated first in one direction and then in an opposite direction by a predetermined angle such as slightly less than 90.degree.. The cuts result in the forming of several largely ring-shaped lands, each largely ring-shaped land being joined to the other rings of different radii by thin portions of the plate, and each ring being cut into segments. The bridges that join different rings, hold the transducer together until it can be mounted on a lens.

REFERENCES:
patent: 2956184 (1960-10-01), Pollack
patent: 3624896 (1971-12-01), Danbeney et al.
patent: 4166230 (1979-08-01), Luft

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